With an abundance of sun and wind, Spain is positioning itself as Europe's future leader in green hydrogen production to clean up heavy industries. But some energy experts express caution because this process relies on massive availability of zero-carbon electricity.
Green hydrogen is created when renewable energy sources power an electrical current that runs through water, separating its hydrogen and oxygen molecules (分子). The process doesn't produce planet-warming carbon dioxide, but less than 0.1% of global hydrogen production is currently created in this way.
The separated hydrogen can be used in the production of steel, ammonia (氨) and chemical products, all of which require industrial processes that are harder to stop fossil fuels. Hydrogen also can be used as a transportation fuel, which could one day transform the highly polluting shipping and aviation sectors.
Spain's large, windswept and thinly populated territory receives more than 2,500 hours of sunshine on average per year, providing ideal conditions for wind and solar energy, and therefore green hydrogen production.
"If you look at where hydrogen is going to be produced in Europe in the next million years, it's in two countries, Spain and Portugal," said Thierry Lepercq, the founder and president of HyDeal Ambition, an industry platform bringing together 30 companies. "Hydrogen is the new oil."
Lepercq is working with companies like Spanish gas pipeline corporation Enagas and global steel giant ArcelorMittal to design an end-to-end model for hydrogen production, distribution and supply at a competitive price. Criticism has centered on green hydrogen's higher cost compared with highly-polluting "gray hydrogen" drawn from natural gas. Lepercq argues that solar energy produced in Spain is priced low enough to compete.
Globally, Lepercq said, "Electricity is 20% of energy consumption. What about the 80% that is not electrified? ... You need to replace those fossil fuels. Not in 50 years' time. You need to replace them now."
